'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    // Single shared banner image for the rotating sticky announcement bar —
    // one image for all (up to 3) concurrently-active announcements, not one
    // per announcement. Enforced as a singleton in application code (always
    // read/written as id=1), same pragmatic approach as the "no need for a
    // dedicated Banner entity" ask — just a one-row setting.
    await queryInterface.createTable('sticky_banner_settings', {
      id: {
        type:         Sequelize.SMALLINT,
        primaryKey:   true,
        defaultValue: 1,
      },
      image_asset_id: {
        type:       Sequelize.BIGINT,
        allowNull:  true,
        references: { model: 'assets', key: 'asset_id' },
        onDelete:   'SET NULL',
      },
      updatedBy: {
        type:      Sequelize.BIGINT,
        allowNull: true,
      },
      createdAt: {
        type:         Sequelize.DATE,
        allowNull:    false,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
      updatedAt: {
        type:         Sequelize.DATE,
        allowNull:    false,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
    });
  },

  async down(queryInterface) {
    await queryInterface.dropTable('sticky_banner_settings');
  },
};